scripts/versify.hs


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import Text.Pandoc.JSON
import Data.List.Split

main :: IO ()
main = toJSONFilter transformVerseParas

transformVerseParas :: Block -> Block
transformVerseParas (Para xs)
    | LineBreak `elem` xs = Para (addLineSpans xs)
    | otherwise = Para xs
transformVerseParas x = x

addLineSpans :: [Inline] -> [Inline]
addLineSpans = map encloseInSpan . splitWhen (== LineBreak)
    where encloseInSpan = Span ("", ["line"], [])